Calvin Chow
Bib: 7483•M•Age: 31
San Francisco, CA
⏱️ Race Timeline
The Course
Claim it — unlock a deeper AI report on this race, free
A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.
Checkpoint Splits
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment Time | Segment Pace | Diff |
|---|---|---|---|---|---|---|---|
1.81 Miles | 1.81 mi | 05:51:40 | 18:43 | 10:20 | 18:43 | 10:20 | - |
5.55 Miles | 5.55 mi | 06:31:05 | 58:08 | 10:28 | 39:25 | 10:32 | +0:12 |
6.52 Miles | 6.52 mi | 06:41:47 | 1:08:50 | 10:33 | 10:42 | 11:02 | +0:30 |
10.87 Miles | 10.87 mi | 07:27:45 | 1:54:48 | 10:34 | 45:58 | 10:34 | -0:28 |
Garmin Hill Challenge | 11.38 mi | 07:34:43 | 2:01:46 | 10:42 | 6:58 | 13:40 | +3:06 |
14.95 Miles | 14.95 mi | 08:09:48 | 2:36:51 | 10:29 | 35:05 | 9:50 | -3:50 |
18 Miles | 18.00 mi | 08:49:18 | 3:16:21 | 10:55 | 39:30 | 12:57 | +3:07 |
25 Miles | 25.00 mi | 10:26:22 | 4:53:25 | 11:44 | 1:37:04 | 13:52 | +0:55 |
Finish | 26.22 mi | 10:40:48 | 5:07:51 | 11:45 | 14:26 | 11:51 | -2:01 |
Checkpoints & Pacing
📈Pace Line
Pace Progression
Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.
Fastest Pace
9:50 /mi
Average Pace
11:45 /mi
Slowest Pace
13:52 /mi
📊Segments
Segment Time Comparison
Time at Faster Pace
35:05
11% of race
Time at Steady Pace
1:54:48
37% of race
Time at Slower Pace
2:37:58
51% of race
Average Pace: 11:44 /mi
🎨Heatmap
Pace Heatmap
Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.
Click or hover over segments to see details
✨Sparklines
Checkpoint Splits with Pace Trends
Overall Pace Trend
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment | Pace | Trend | Rank |
|---|---|---|---|---|---|---|---|---|
1.81 Miles | 1.81 mi | 05:51:40 | 18:43 | 10:20 | 18:43 | 10:20 | #4831 | |
5.55 Miles | 5.55 mi | 06:31:05 | 58:08 | 10:28 | 39:25 | 10:32 | #4709 | |
6.52 Miles | 6.52 mi | 06:41:47 | 1:08:50 | 10:33 | 10:42 | 11:02 | #4658 | |
10.87 Miles | 10.87 mi | 07:27:45 | 1:54:48 | 10:34 | 45:58 | 10:34 | #4515 | |
Garmin Hill Challenge | 11.38 mi | 07:34:43 | 2:01:46 | 10:42 | 6:58 | 13:40 | #4490 | |
14.95 Miles | 14.95 mi | 08:09:48 | 2:36:51 | 10:29 | 35:05 | 9:50 | #4510 | |
18 Miles | 18.00 mi | 08:49:18 | 3:16:21 | 10:55 | 39:30 | 12:57 | #4517 | |
25 Miles | 25.00 mi | 10:26:22 | 4:53:25 | 11:44 | 1:37:04 | 13:52 | #5028 | |
Finish | 26.22 mi | 10:40:48 | 5:07:51 | 11:45 | 14:26 | 11:51 | #4980 |
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Males | M30-34 | Seg. Overall | Seg. Males | Seg. M30-34 |
|---|---|---|---|---|---|---|---|---|
| 1.81 Miles | 1.81 mi | 1.81 mi | 4831 | 3658 | 726 | 4831(Top 74%) | 3658(Top 79%) | 726(Top 78%) |
| 5.55 Miles | 5.55 mi | 3.74 mi | 4709+122 | 3600+58 | 718+8 | 4715(Top 72%) | 3598(Top 78%) | 724(Top 78%) |
| 6.52 Miles | 6.52 mi | 0.97 mi | 4658+51 | 3562+38 | 713+5 | 4601(Top 70%) | 3530(Top 76%) | 709(Top 76%) |
| 10.87 Miles | 10.87 mi | 4.35 mi | 4515+143 | 3477+85 | 698+15 | 4399(Top 67%) | 3399(Top 73%) | 679(Top 73%) |
| Garmin Hill Challenge | 11.38 mi | 0.51 mi | 4490+25 | 3458+19 | 692+6 | 4421(Top 68%) | 3392(Top 73%) | 688(Top 74%) |
| 14.95 Miles | 14.95 mi | 3.57 mi | 4510-20 | 3467-9 | 694-2 | 4591(Top 70%) | 3502(Top 75%) | 691(Top 74%) |
| 18 Miles | 18.00 mi | 3.05 mi | 4517-7 | 3458+9 | 677+17 | 4959(Top 76%) | 3628(Top 78%) | 718(Top 77%) |
| 25 Miles | 25.00 mi | 7.00 mi | 5028-511 | 3737-279 | 740-63 | 5606(Top 86%) | 4000(Top 86%) | 800(Top 86%) |
| Finish | 26.22 mi | 1.22 mi | 4980+48 | 3701+36 | 730+10 | 4533(Top 69%) | 3305(Top 71%) | 666(Top 71%) |
Segment Performance Analysis
Start → 1.81 Miles
0.0 - 1.8 mi
Overall
4831
Males
3658
M30-34
731
1.81 Miles→5.55 Miles
1.8 - 5.5 mi
Overall
4715
Males
3598
M30-34
729
5.55 Miles→6.52 Miles
5.5 - 6.5 mi
Overall
4601
Males
3530
M30-34
713
6.52 Miles→10.87 Miles
6.5 - 10.9 mi
Overall
4399
Males
3399
M30-34
681
10.87 Miles→Garmin Hill Challenge
10.9 - 11.4 mi
Overall
4421
Males
3392
M30-34
689
Garmin Hill Challenge→14.95 Miles
11.4 - 14.9 mi
Overall
4591
Males
3502
M30-34
693
14.95 Miles→18 Miles
14.9 - 18.0 mi
Overall
4959
Males
3628
M30-34
718
18 Miles→25 Miles
18.0 - 25.0 mi
Overall
5606
Males
4000
M30-34
800
25 Miles→Finish
25.0 - 26.2 mi
Overall
4533
Males
3305
M30-34
666
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 1.81 Miles | - | - | - | - | #4831 |
| 1.81 Miles → 5.55 Miles | 275 | 153 | +122 | #4831 | #4709 |
| 5.55 Miles → 6.52 Miles | 74 | 23 | +51 | #4709 | #4658 |
| 6.52 Miles → 10.87 Miles | 209* | 66 | +143 | #4658 | #4515 |
| 10.87 Miles → Garmin Hill Challenge | 57 | 32 | +25 | #4515 | #4490 |
| Garmin Hill Challenge → 14.95 Miles | 65* | 85 | -20 | #4490 | #4510 |
| 14.95 Miles → 18 Miles | 105* | 112 | -7 | #4510 | #4517 |
| 18 Miles → 25 Miles | 53* | 564 | -511 | #4517 | #5028 |
| 25 Miles → Finish | 57* | 9 | +48 | #5028 | #4980 |
| TOTALS | 895* | 1044 | -149 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Visuals
📈Position Graph
🎨Heatmap Timeline
🔄Passing Circle
🌊Position Flow
🏃Race Lanes
Upload your GPX file
Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps
.gpx files up to 10MB
Export Track Data
Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.
Questions or issues regarding timing data?
If you notice any discrepancies in your timing data or have questions about your results, our support team can help.
Contact Race SupportQuick Links
Explore more race data and athlete comparisons
Public Race Data
Enhanced athlete results built from publicly available data.
Race managed by
The San Francisco Marathon
